PROBLEM TO BE SOLVED : To provide an auxiliary video system and method for real estate advertisement for conveniently retrieving real estates by providing characters, and still and animation videos together.SOLUTION : The still and animation videos of the appearances of nationwide buildings and related and surrounding commercial districts, facilities, public transportation lines, etc., are taken with a digital camera and digital video camera in advance, and a database consisting of characters and the videos is prepared and stored by using a computer to provide detailed data to a buying side. In addition, by turning the database to be an Internet database, the buying side can retrieve the data conveniently through a network server.